نتایج جستجو برای: pathogenic viruses and bacteria
تعداد نتایج: 16867564 فیلتر نتایج به سال:
The repeated exposure of a normal cell to carcinogenic agents may lead to its mutation, which changes into a cancer cell. In this case, the structure and function of the cells would alter, and they do not act normally. Chemicals, sun exposure, shortwaves, viruses, and bacteria play a significant role in cancer. Among the infectious and bacterial agents causing cancer, Helicobacter pylori (H. py...
Microbiota is a cluster of physiological and pathogenic microorganisms found in many tissues organs living things, including such as bacteria, viruses, fungi. has important roles on system functions immune system, urinary digestive system. However, these can cause obstruction the genital tract, epididymitis orchitis, thus may lead to infertility. In addition, apathogenic viruses fungi have nega...
Periodontal disease is a microbial infection involving a variety of microbes that trigger inflammation, loss of connective tissue attachment and alveolar bone around the teeth. The primary etiologic factor of periodontitis is bacterial plaque. The bacteria involved are largely gram negative species that express pathogenic factors that elicit host defence responses resulting in inflammation and ...
The abundant use of anti-infective agents resulted in the emergence of drug-resistant bacteria, fungi, and viruses. To overcome the increasing resistance of pathogenic microbes, a variety of medicinal plants have been screened worldwide for their antimicrobial properties. The aim is to find new, effective antimicrobial agents with novel modes of actions. Essential oils derived from aromatic med...
A number of pathogenic microbes including neuroinvasive viruses, bacteria and parasites are capable of entry into the central nervous system (CNS) and cause a variety of clinical manifestations. The cellular and molecular mechanisms for the CNS invasion have been extensively studied in the last two decades. Viruses invade neurons and thereby cause encephalitis or peripheral neuritis, while bact...
Bacteria have a remarkable ability to adapt, evolve and survive by developing resistance to therapeutic compounds. This ability is also shared by other pathogenic agents such as viruses, fungi, and parasites. Even when focusing on bacterial resistance only, this phenomenon is quite complex to analyse due to the diversity of animal species, the diversity of rearing environment, the number of ant...
background : due to excessive consumption of synthetic drugs, drug resistance rate of pathogenic bacteria is increasing and there is an ever-increasing need to find new safe compounds to tackle this problem. this study was conducted to investigate the consequences of chavill extract on the growth and viability of gastrointestinal pathogenic bacterium and probiotics bacteria. methods : t...
Ticks (Acari: Ixodida) are hematophagous ectoparasites of a wide variety mammals, birds, reptiles, and amphibians, the vectors many pathogenic agents, such as bacteria, protozoa, viruses. The seasonal movement migration birds is one main causes dispersal ticks tick-borne pathogens. Therefore, identification associated with migratory fundamental step to understand ecology infesting evaluate thei...
The Human Immune System (HIS) is a complex network composed of specialized cells, tissues, and organs that is responsible for protecting the organism against diseases caused by distinct pathogenic agents, such as viruses, bacteria and other parasites. The first line of defence against pathogenic agents consists of physical barriers of skin and the mucous membranes. If the pathogenic agents brea...
The family Cystoviridae includes enveloped viruses with a tri-segmented dsRNA genome and a double-layered protein capsid. The innermost protein shell is a polymerase complex responsible for genome packaging, replication and transcription. Cystoviruses infect Gram-negative bacteria, primarily plant-pathogenic Pseudomonas syringae strains. This is a summary of the International Committee on Taxon...
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